This article is about a/an kaijin in Kamen Rider, the original series.

Gillerkorogi (ギラーコオロギ Girākōrogi, 69) - A cricket monster of Shocker. He could infect humans with venom from his mandibles that would give them sharp claws, a feral mind, and kill them in three days unless cured and could emit destructive energy waves called the Murder Wave from his forehead. He was destroyed by Kamen Rider #1's Rider Kick and Knee Block.